• Bulletin of the Korean Chemical Society
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• v.30 no.5
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• pp.1077-1079
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• 2009

To minimize the variance in the quantification of solid-state phases in powder samples, gently placing polycrystalline samples one next to another directly in a sample holder is better than trying to mix them homogeneously prior to transferring to a sample holder. However, the solid-state cross polarization-magic angle spinning (CP-MAS) nuclear magnetic resonance (NMR) spectroscopy results demonstrated that it is essential in this sampling method to place all the samples in the location of consistent signal sensitivity. The same sampling method may be employed in other spectroscopic quantification techniques of solid-state phases if the method to limit the sample to the location with uniform signal sensitivity in the sample holder is adapted to each technique.

• Journal of Korea Foundry Society
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• v.16 no.6
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• pp.565-575
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• 1996

In this study, to gain the semi-solid alloy we employed the electromagnetic rotation by a induction motor of 3-phases and 2-poles for Al-7wt%Si alloy and observed the size of primary solid particle, distribution state of primary solid particle, the degree of sphericity, and fraction of primary solid for the evaluation of its results. The size of primary solid particle increases from $98{\mu}m$ to $118{\mu}m$ as solid fraction increases from 0.2 to 0.5. The degree of sphericity increased as the solid fraction increased. Solid particles obtained from the microstructures of isothermally held sample were coarsened and the degree of sphericity was enhanced as isothermal holding time increased. However, when the sample was stirred for more than 40min, solid particles merged together and liquid phase was entrapped within the cluster of solid particles. The size of primary solid particle was not changed significantly with the variation of input voltages by 160V over which solid particles began to merge together to be a large cluster of about $170{\mu}m$ at 180V. The standard deviation and the degree of sphericity were not changed significantly with the variation of input voltage.

• The Journal of Pediatrics of Korean Medicine
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• v.8 no.1
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• pp.1-12
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• 1994

In order to investigate the effects of Insamyangwee Tang on cell-mediated and humoral immune response, solid extract of Insamyangwee Tang (sample A), mixture of individual solid extract of Insamyangwee Tang (sample B) were administered orally for 14 days. The auther used ICR mice having a body weight of about 20-22g as experimental animals dividing them into three groups-Saline, Sample A and Sample B group. All of the mice were sensitized i.v. with $10^8$ sheep red blood cells(SRBC) and challenged i.d. with $10^8$ SRBC 4 days later. Such immune responses as delayed-type hypersensitivity(DTH), rosette forming cells(RFC), hemagglutinin titers(HA titers) and hemolysin titers(HL titers) were measured at 24 hours after challenge. The results were as follow: 1. DTH in Sample A & Sample B group was increased, as compared with Saline group, with satistical significance. 2. RFC in Sample A & Sample B group were increased, as compared with Saline group, with statistical significance. 3. HA titers in Sample A & Sample B group were not increased, as compared with Saline group, with statistical significance. 4. HL titers were increased just only in Sample A group with statistical significance. The inference from the above results is that Sample A group is better than Sample B group, and Insamyangwee Tang enhance the cell-mediated and humoral immune response.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2005.10a
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• pp.185-186
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• 2005

• Korean Journal of Veterinary Research
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• v.43 no.3
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• pp.393-398
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• 2003

Simple and rapid sample preparation method for trace elements in foods of animal origin using ultra high pressure microwave digestion system (UHP/MDS) and inductively coupled plasma atomic emission spectrometer (ICP/AES) were developed. 1. For the digestion of sample using UHP-MDS, 20% nitric acid (v/v) was the most suitable solvent for the determination of trace elements in foods of animal origin. 2. The optimal digestion conditions for UHP-MDS were as follows: final temperature $180^{\circ}C$, final pressure 400 PSI, and magnetic power 900 W in the solid sample. For the liquid sample final temperature $170^{\circ}C$, final pressure 300 PSI and magnetic power 700 W were optimal conditions. 3. As result of interlaboratory test, the average recovery rate of the for solid sample were 88.3~99.1% for As, 82.4~93.3% for Cd, 89.2~101.2% for Hg and 86.5~93.8% for Pb, respectively. In liquid sample, it were 87.0~96.8% for As, 80.9~96.6% for Cd, 87.5~91.2% for Hg and 91.4~95.5% for Pb, respectively. 4. The average coefficient variation rate were 3.3~15.9% for solid sample and 2.9~10.8% for liquid sample.

• Journal of Sasang Constitutional Medicine
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• v.4 no.1
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• pp.231-240
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• 1992

In order to investigate experimentally the effects of Taeumin Handayolsot'ang and Gamihandayolsot'ang, experimental studies were conducted about antipyretic effect, analgesic effect, antiinflammatory effect of edema, sadative effect, anticonvulsive effect experimental animals (mice and rats). Sample A group was a solid extract of Handayolsot'ang treated group. Sample B group was a solid extract of Gamihandayolsot'ang treated group. The results were summarized as fallows. 1. In antipyretic action by yeast method, sample A group was decreased significantly and sample B group showed decreasing tendency, but showed no significance. 2. In the effect of control for writhing syndrome by the acetic acid stimulating method, sample B group was repressed significantly and sample A group showed repressing tendency, but showed no significance. 3. Antiinflammatory action by carrageenine edema method was showed significant effect at all sample groups. 4. Sadative effect by rotor rod method in rats was not noted at all sample groups. 5. In anticonvulsive action by E C T unit method, time to death in mice was significantly prolonged at all sample groups. According to the above results, it is considered that Taeumin Handayolsot'ang and Gamihandayolsot'ang will be effective on pyretic diseases.

• Biotechnology and Bioprocess Engineering:BBE
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• v.7 no.1
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• pp.21-25
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• 2002

To maximize and sustain the productivity of Monascus pigments, various environmental and nutritional parameters, such as the initial moisture content, pH, inoculum size, sample size, and nutrient supplement, that influence pigment production were evaluated in solid-state cultures as follows: initial moisture content, $50\%;$ pH, 6.0; inoculum size $1\;\times\;10^4$ spore cells $(grams\;of\;dry\;solid\;substrate)^{-1};$ sample size, 300 g. All supplementary nutrients (carbon, nitrogen, and mineral sources) added has inhibitory effects on the cell growth and red pigment production. In open tray culture the maximum biomass yield and specific productivity of red pigments were 223 mg DCW $(grams\;of\;initial\;dry\;substrate)^{-1}$ and, $47.6\;OD_{500}\;(DCW\;grams)^{-1}h^h{-1}$ respectively.

• Korean Journal of Materials Research
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• v.33 no.3
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• pp.95-100
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• 2023

This research examines the effect of adding aluminum on the structural, phasic, and magnetic properties of CoCrFe NiMnAl_x high-entropy alloys. To this aim, the arc-melt process was used under an argon atmosphere for preparing cast samples. The phasic, structural, and magnetic properties of the samples were characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), and vibrational magnetometry (VSM) analyses. Based on the results, the addition of aluminum to the compound caused changes in the crystalline structure, from FCC solid solution in the CoCrFeNiMn sample to CoCrFeNiMnAl BBC solid solution. It was associated with changes in the magnetic property of CoCrFeNiMnAl_x high-entropy alloys, from paramagnetic to ferromagnetic. The maximum saturation magnetization for the CoCrFeNiMnAl casting sample was estimated to be around 79 emu/g. Despite the phase stability of the FCC solid solution with temperature, the solid solution phase formed in the CrCrFeNiMnAl high-entropy compound was not stable, and changed into FCC solid solution with temperature elevation, causing a reduction in saturation magnetization to about 7 emu/g.

• Journal of the Korean Society for Marine Environment & Energy
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• v.3 no.3
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• pp.34-40
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• 2000

A multisample extraction device was newly designed for efficient extraction of dissolved lipophillic organic compounds from sea water sample. This device allowed extraction of organic compounds from up to 96 sample at a time using 96 multifolder on the principle of solid phase extraction with commercially available octadecyl silane (ODS) cartridges. The recovery yield of the new divice was higher than 90 % while that of conventional liquid-liquid extraction process are only 60 - 70 %. The amount of solvent required for the new device could be reduced to less than 20㎖ per 1ℓ of sample while 1 - 2 ℓ of solvent were used in the conventional liquid-liquid extraction process. The usefulness of this novel method was demonstrated with sea water samples collected from Yellow sea, and the qualitative and quantitative analyses results of the dissolved hydrocarbon showed this method was superior to that of conventional liquid-liquid extraction process in efficiency and reliability.

• Journal of the Korean Ceramic Society
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• v.46 no.6
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• pp.653-656
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• 2009

Alumina bushing used for manufacturing glass fiber was fabricated by gel-casting which can fabricate complex forms. When solid loading is increased, density was increased and shrinkage and absorption were decreased. The sample loading with 57 vol% solid was optimum for alumina suspension, which showed the best physical properties. The cast sample was sintered at $1550{^{\circ}C}$ for two hours with sintering additive, $Y_2O_3$. The result showed that the alumina bushing with $Y_2O_3$ sintering additive has a density of 98%, shrinkage of 11% and bending strength of 196 kg/$cm^2$.